California Sierras /Western Mojave: Good to Great Soaring weatherWed-Fri 08/19 to 08/21

Hi Everyone... WX here

I'm comming out tyo fly Wednesday (Cal City) ... because I have to
work Thur/Fri

High pressure aloft will build into NV/OR on Wednesday. Wind
circulations 10,000-18,000 northerly in NV turn easterly over the
Central and Norther Sierras... and light southeasterly Southern CA.
This pattern sweeps dry fairly unstable air into the Sierras... and
allows thermals to start early in the Western Mojave Deserts
especially over the Tehachapi mtns and north.

Wednesday it will still be dry with cu bases 18,500 from Olancha Pk
north. Mostly blue over the Deserts and to east. Dr Jack shows
thermals to 16,000 starting fairly early over the Western Mojave
nearby mtns (Tehachapis and Southern Sierra) ... 15,000 over the flat
deserts in the afternoon. Late if any low level "washout" SW low level
winds.... So, you can get back home fairly late.

Thursday and Friday look a bit better as the 500mb slides to Central
NV and UT leaving Southern CA and the Owens valley in a light SE flow.
We'll probably see more cu and a near "classic" sky. Cut off low just
off Southern CA coast will feed the SE flow and add to instability.
Right now, I don't think that thunderstorm overdevelopment will be a
problem.

Let's go for it the end of this week... !

Thursday looks BEST.

Weekend weather will make a down turn as more stable SW flow moves in.


Walt Rogers, WX